1.

In presence of excess base andexces shalogen a methyl ketone is converted first into a trihalo substituted ketone and then into a carbonylc acid . After thetrihalo substituted ketone is formed hydroxide ion attacks the carboxyl carbon because the trihalo methyl ion is thegroup more easily expelled from the tetrahedral intermediate .The conversion of methyl ketone to a carboxylic acid is called a haloform reaction because one of the product is halofor (CHCl_(3)) or CHI_(3) or CHBr_(3). Which of the following compoud show haloform reaction and racemisation inOD^(-)//D_(2)O.

Answer»

`CH_(3)CH_(2)OH`


`CH_(3)-UNDERSET(O)underset(||)(C)-underset(Et)underset(|)(CH)-Ph`

SOLUTION :`CH_(3)-underset(O)underset(||)(C)-overset(**)underset(Et)underset(|)(CH)-Ph`has `alpha` -Hat CHIRAL carbon.


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